5.0 gi oil recommendation

[mklearl]

I apologize for posting this as I'm sure it has been answered somewhere. Researching the internet I have found about 50 different answers so I figured I would just come out and ask the question. I just inherited an volvo penta 5.0 gi and have the owners manual. I am preparing to bring this back to life since it has been sitting for 10 years. The manual says to use sae 30 oil. But I have also seen 10w30, 15w50, 10w40 and so on. Can someone please tell me what the recommended oil is for this motor? Thanks

 

[dannys2004glastron175mx]

I run 15 w40 Shell Rotella . because that's what my auto parts store carries op2:.

 

[Redeye1620]

I Run full synthetic 5w-40 delo or rotello. If these oil can help my 18 wheeler last beyond 1, 000, 000 miles, then they will help my barge survive the marine environment....my $00.02 ....Rich.......

 

[Thalasso]

I apologize for posting this as I'm sure it has been answered somewhere. Researching the internet I have found about 50 different answers so I figured I would just come out and ask the question. I just inherited an volvo penta 5.0 gi and have the owners manual. I am preparing to bring this back to life since it has been sitting for 10 years. The manual says to use sae 30 oil. But I have also seen 10w30, 15w50, 10w40 and so on. Can someone please tell me what the recommended oil is for this motor? Thanks

Straight 30 can be hard to find. I am sure your manual gives you alternative weights to use.

 

[dypcdiver]

When were these engines designed? And what oils were available then? The improvements in lube technology have advanced massively since then.
I have always used Mobil S 10-40W (now called Super 2000) in my engines and have never had any problems or any need to top up between oil changes each season. Your choice.

 

[mklearl]

When were these engines designed? And what oils were available then? The improvements in lube technology have advanced massively since then.
I have always used Mobil S 10-40W (now called Super 2000) in my engines and have never had any problems or any need to top up between oil changes each season. Your choice.

That is where my confusion comes from. The manual (1998) states to use straight 30 which you can't find. It also states "use only single viscosity oils in markets where able. The use of multi-viscosity oils such as 10w30, 10w40 is not recommended." However, if you look up a parts list online, the volvo penta oil is 10w40 oil. Has 10w40 oil changed over the past 20 years as to where it is now not only discouraged but recommended?

 

[doyall]

Based on what VP says here, I would go with a good (synthetic) 15w-50 or 20w-50:

http://pie.volvopenta.com/ViewFileF...T403&d=Owners Publication&s=798703&lang=en-US

Lubrication system Oil capacity (including oil filter) (liters) ................... 5.7 5.7
Volume between Max and Min
on the dipstick (liters) .............................................. 1.0 1.0
Oil grade in accordance with the API system ........ Service SG Service SG
Viscosity at -5? - +50? C* ........................................ SAE 20W/50** SAE 20W/50**
(SAE 15W/50) (SAE 15W/50)

 

[Tail_Gunner]

When were these engines designed? And what oils were available then? The improvements in lube technology have advanced massively since then.
I have always used Mobil S 10-40W (now called Super 2000) in my engines and have never had any problems or any need to top up between oil changes each season. Your choice.

We are in the same camp here any new syn oil has all of the qualities and them some. However a engine with a flat tappet cam needs a zinc additive and there are a lot of those old engine's around.

 

[Redeye1620]

The oils I recommended do have zinc additive packages.

 

[mklearl]

Glad to see I'm not the only one confused. I think I may just stick with the $40/gallon recommended vovlo brand:
Original Equipment Manufacturer
A fully synthetic oil for use all year round. Specially developed for high performance engines. Provides excellent protection against wear under severe running conditions at both high and low extremes of temperatures. Viscosity: SAE 10W-40
Grade: API SJ, ACEA A3/B3

 

[Tail_Gunner]

Glad to see I'm not the only one confused. I think I may just stick with the $40/gallon recommended vovlo brand:
Original Equipment Manufacturer
A fully synthetic oil for use all year round. Specially developed for high performance engines. Provides excellent protection against wear under severe running conditions at both high and low extremes of temperatures. Viscosity: SAE 10W-40
Grade: API SJ, ACEA A3/B3

:faint2:......,,,Ok Save that money and buy gas beer or what ever your hearts content. Any 15/40-45 syn will be more than fine way above par actually, you do have a roller cam so no zinc addidtive is nessacry. Mobile one is probably a brand leader....i hate to say it like this but oil brand is a bit like women..some like blonde's some like red heads some like brunette's....:facepalm:...Shallow i know but it is what it is...The only oil you want to be careful with is outdrive oil that need's to have a gl5 property and non limitied slip and Volvo seems to be the only game in town....Ok to the crowd why the concern ove LS in a oil this is not a truck..but a cone clutch.

 

[Thalasso]

Somewhere around 20 years ago a deactivated or buffered sulfur was developed that would react with the phosphorous to create the protective/sacrificial layer in the conditions created in the gear boxes (temperature and pressure) without being corrosive to the brass, copper, etc. This additive system is used in most gear oils today.
API GL-5 rating. It is a rating for EP (Extreme Pressure) protection.

A normal GL-4 gear oil of any given viscosity has about ? of the level of sulfur/phosphorous additive
that would be in the GL-5 product, so the bond is not as strong, and therefore can be peeled off without
peeling a layer of brass (or less brass).

When we use a GL-5 product in a transmission that requires GL-4, we normally find 2 to 4 times as
much copper in the used oil as we would with a GL-4 product. Eventually the synchronizers wear to
the point that they no longer make contact with the other half of the cone, bottoming out before
stopping the opposing gear.
[PDF]The Difference between GL-4 and GL-5 Gear Oils

www.widman.biz/uploads/Transaxle_oil.pdf
[h=3]API GL-5: Clearing up the Confusion - Automotive Gear Oil ...[/h] https://www.lubrizol.com/.../AutomotiveGearOil/GL5.html Lubrizol